PSY-B - Psychology PSY-B 394 Lecture Notes - Lecture 3: Pia Mater, Auditory Cortex, Arachnoid Mater
11 Apr 2016
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2: structure and funcion of the nervous system. Neurons: specialized, rapid transmission of informaion w/ 3 properies. Conduct bioelectric signals without loss of signal strength. Possess synapses (intercellular connecions w/ other neurons and innervated issues. Structure and funcion change in response to experience/learning (plasicity: 3 types: sensory, motor, interneurons. Anatomy of neuron: convergence: neurons can receive info from thousands of other neurons, divergence: integrated info transmited to thousands of other neurons, membrane made of phospholipid bilayer w/ diferent inserted proteins. Glial cells: provide support and insulaion for neurons, esimates suggest that there are 10x more glia than neurons, 4 major types. Astrocytes: provide support and insulaion; accumulate glucose & synthesize glycogen. Oligodendrocytes: form of myelin sheath around axons in cns. Schwann cells: form myelin sheath around axons in pns. Microglia: involved in immune funcion within brain. Related to macrophages (scavengers that remove dying cells at site of damage) Related to monocytes (producing inlammatory response following injury)
